EP0921318B1 - Ensemble ventilateur avec amélioration du réfroidissement du moteur - Google Patents

Ensemble ventilateur avec amélioration du réfroidissement du moteur Download PDF

Info

Publication number
EP0921318B1
EP0921318B1 EP98119844A EP98119844A EP0921318B1 EP 0921318 B1 EP0921318 B1 EP 0921318B1 EP 98119844 A EP98119844 A EP 98119844A EP 98119844 A EP98119844 A EP 98119844A EP 0921318 B1 EP0921318 B1 EP 0921318B1
Authority
EP
European Patent Office
Prior art keywords
circumferential
cooling air
fan assembly
assembly according
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98119844A
Other languages
German (de)
English (en)
Other versions
EP0921318A2 (fr
EP0921318A3 (fr
Inventor
Peter Kershaw
Marek Horski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Tire Canada Inc
Original Assignee
Siemens VDO Automotive Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens VDO Automotive Inc filed Critical Siemens VDO Automotive Inc
Publication of EP0921318A2 publication Critical patent/EP0921318A2/fr
Publication of EP0921318A3 publication Critical patent/EP0921318A3/fr
Application granted granted Critical
Publication of EP0921318B1 publication Critical patent/EP0921318B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/329—Details of the hub
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system

Definitions

  • Conventional electric motors may be generally characterized by a cylindrical housing which contains the various stationary and rotating components of the motor, as well as the associated electronic circuitry.
  • the housing is regarded as a combination of the rotor and a rear cover member.
  • Such motors are generally utilized to drive a cooling fan in automotive applications wherein the motor is of the brushless-type and the fan is attached to a fan hub which is in turn attached to the rotor of the motor.
  • the motor components are arranged in a relatively small space within the motor housing, thus resulting in the production of significant amounts of heat with little dissipation.
  • a cooling air path extends through the housing and a cooling device known in the art as a heat sink is provided with heat dissipating fins within the housing.
  • the atmospheric air passes through the housing past the components and the fins of the heat sink and thereby cools the motor.
  • the provision of a cooling air path through the motor housing is not always sufficient to produce the requisite cooling, particularly when the motor is used to rotatably drive a fan of considerable weight.
  • the fan may contain any of a number of fan blades, generally between four and ten.
  • there is relatively substantial power consumption and significant amounts of heat generation within the brushless motor which makes it desirable to provide additional cooling enhancement for the brushless motor.
  • several alternatives may be considered, including increasing the spaces between the motor components, or increasing the cooling air flow through the motor, for example. In view of limited space requirements the first mentioned alternative is not viable.
  • U.S. Patent No. 4,838,760 relates to a fan with motor cooling enhancement in which a plurality of arcuately shaped webs are provided on a fan hub for inducing the flow through the motor and through a plurality of openings formed in an axially extending wall of the hub. This arrangement utilizes additional energy to force the airflow, while its relatively complicated structure increases manufacturing costs.
  • U.S. Patent No. 5,217,353 relates to a fan for motor vehicles wherein a motor includes a casing having a stationary part with holes for taking in air from outside for ventilating the interior of the motor and a rotary part with holes which act as outlet ducts for the internal ventilation air. The cross-sections of the ducts decrease in the direction of the air-flow and open into the outside atmosphere in regions over which the air-flow induced by the fan wheel passes in operation.
  • EP-0,569,738 describes a small commutator motor, in particular a radiator fan motor for motor vehicles, which has a rotor seated on a rotor shaft together with a commutator and further has a pole tube which forms the stator, fits over the rotor and the commutator is closed off at both ends by an end shield the length of which is relatively great compared with its diameter.
  • exhaust air openings coinciding with an intake opening, coaxial with the rotor shaft of a radial flow fan driven by the rotor shaft are made in the front end shield, the end shield remote from the commutator, near to the rotor shaft.
  • Inlet air openings which allow the interchange of air are provided either in the rear end shield or likewise in the front end shield, in which case the inlet air openings are screened off from the exhaust air openings to prevent direct interchange of air.
  • DE 3,301,918 describes an electromotor that has holes in its casing wall leading through to components belonging to the commutator.
  • the air supply line enters the chamber that contains the holes.
  • the chamber lies upstream of the casing wall against the direction of flow of the cooling air.
  • the chamber is formed by a cap attached axially to the casing.
  • the air supply line joins at the bottom of a pot-shaped cap.
  • the commutator's components may be on a support plate which has the holes and lies in front of the chamber across the motor's axis. The holes are aligned with resistors or other hot components.
  • FR 2,433,846 describes an electric motor with a fan and an air cooled housing.
  • An inlet orifice of the cooling air is provided with a pipe whose mouth is located some distance from the electric motor.
  • a motorised fan assembly which comprises: a motor having a rotor; a hub having a plurality of fan blades extending radially outwardly therefrom and having means to be fixed to the motor for rotation, such that when the hub is rotatably driven, the fan blades create an atmospheric pressure differential defined by a higher pressure region downstream of the blades and a lower pressure region upstream of the blades, said hub further having an opening dimensioned and located to receive a portion of the rotor therein, characterised by the portion of the rotor having a cooling air opening therein which communicates with the higher pressure region; and a cooling air directing member positioned axially upstream of said hub to define an air directing space with the motor and said hub, said air directing space communicating said lower pressure region with said higher pressure region through a cooling air path in the motor and said opening in the rotor to cool the motor.
  • the hub comprises a base plate adapted to be torsionally fixed to the motor for rotation therewith, and a circumferential flange extending proximally from the base plate in an axial direction.
  • the circumferential flange is configured and dimensioned to circumferentially surround at least a portion of the rotor in adjacent relation therewith.
  • the cooling air directing member disclosed is a plate spaced upstream of the rotor and connected to the radially extending rib members.
  • the plate preferably has a substantially continuous inner surface portion such that with the exception of the presence of snap fit lugs to attach the plate to the rotor, substantially unimpeded air flow is permitted through the generally transverse air directing space.
  • a plurality of snap-fit lugs is provided to attach the hub to the rotor and a plurality of torque studs is provided to transmit torque from the hub to the rotor for rotation therewith.
  • the circumferential flange is comprised of a pair of circumferential individual concentric flange members, a first circumferential flange member being configured and dimensioned to circumferentially surround at least a portion of the motor in adjacent contacting relation therewith, and a second circumferential flange member being spaced radially outwardly from the first circumferential flange member to define an annular space therebetween.
  • the fan blades are attached to the second circumferential flange member and extend radially outwardly therefrom.
  • a plurality of support ribs are positioned between and connected to the first and second circumferential flange members, with the support ribs being spaced circumferentially with respect to each other to provide structural support for the circumferential concentric flange members.
  • an outer surface portion of the second circumferential flange member defines a portion of the cooling air directing path with the air directing plate and has an arcuate cross-sectional configuration adjacent the connection with the hub to provide a contoured configuration for the cooling air directing path.
  • the hub and the cooling air directing plate are molded of a plastic material, such as polyester, nylon or the like.
  • the fan blades are attached to the first and second circumferential flange members and extend radially outwardly from the first circumferential flange member and through the second circumferential flange member.
  • the cooling air directing plate is connected to the second concentric flange member and the annular space between the flange members communicates with the air directing space defined by the air directing plate, the hub and the rotor in combination, to define a continuous cooling air directing path between the cooling air directing plate and the first and second concentric flange members.
  • the fan blades may be attached to the first and second circumferential concentric flange members and extend radially outwardly from the first circumferential flange member through the second circumferential flange member, and the cooling air directing plate may be attached to the second circumferential concentric flange member.
  • the cooling air directing plate is attached by a snap fastener technique.
  • the air directing space is created between a cooling air directing plate torsionally fixed to a rotor and spaced axially therefrom.
  • the plate has a substantially continuous inner surface portion to thereby direct cooling air through in a direction generally transverse to the axis of the motor and in a substantially unimpeded manner.
  • FIG. 1 there is shown a perspective view of a fan assembly 10 constructed according to the present invention, with fan blades 12 connected for rotation to a cylindrically shaped hub 14 which is mounted to rotor 18 of a brushless motor.
  • a type of brushless motor contemplated herein is disclosed in commonly assigned U.S. Application No. 08/632,645, filed April 19, 1996.
  • the fan assembly of the present invention can be utilized with any type of brushless motor or any type of air cooled motor.
  • hub 14 includes front face plate 16 and flange member 17 extending rearwardly along an axial direction from face plate 16.
  • Flange member 17 provides a mounting base for fan blades 12, which are contemplated for use in cooling in limited space applications.
  • the tips of the fan blades 12 are connected by a circumferential ring 20 which functions to stabilize the blades and the airflow passing thereby during rotation thus avoiding unnecessary aerodynamic blade tip vortices.
  • Air directing plate 22 is configured as a flat plate having generally continuous smooth inner and outer surface portions 21 and 23, respectively, as shown.
  • the radially outwardmost portion 25 of plate 22 has an arcuately shaped cross-sectional configuration as shown, which is spaced from and concentric with the adjacent surface of flange member 17 to define a contoured configuration for the space defined therebetween.
  • the air directing plate 22 is attached to the rotor 18 as will be described hereinafter.
  • the rotor is generally made of a metal such as steel.
  • rotor 18 includes a central section formed of radially extending spoke-like ribs 24 extending from a central shaft mount opening 26 to the periphery of the larger circular opening 28. As can be seen, there are three such ribs 24 which are equally spaced to divide circular opening 28 into three individual equal openings 30 which are intended to permit cooling air to pass into the motor and past the internal components thereof.
  • a portion of face plate 16 has been cut away for illustration purposes.
  • the face plate 16 is mounted to the rotor 18 and rotates with the rotor, with the rotational torque being transferred to fan blades 12 and circumferential ring 20 to provide air flow over an object to be cooled, such as an automotive radiator.
  • FIG. 2 there is illustrated a view partially in cross-section, of the hub 14 of Fig. 1 assembled to rotor 18.
  • the entire housing which includes rotor 18 and rear cover plate 34, is shown.
  • Rotor 18 is structured to direct cooling air over the internal components of the brushless motor which are shown schematically in Fig. 2.
  • hub 14 includes face plate 16 and flange member 17 extending in a proximal direction from the face plate 16 and having an arcuately shaped outer surface at the joinder therebetween.
  • the flange 17 is formed of a single circumferential member to which fan blades 12 are attached. Circumferential flange 17 is preferably dimensioned to fit the rotor in contacting relation or with a predetermined press fitted relation.
  • three snap-fit lugs 38 are utilized to attach the hub 14 to the rotor 18 as shown, by inserting them into square apertures 41 and spacing them equally in a circular pattern over the face plate 16 as shown.
  • air directing plate 22 is attached to rotor 18 by snap-fit lugs 36 which are attached to air directing plate 22 and are inserted into square apertures 37 in the ribs 24 of rotor 18. Only one of such snap-fit lugs 36 is shown in the cross-sectional view of Fig. 2; the other snap-fit lug 38 shown in Fig. 2 is of the same type, but attaches the face plate 16 of hub 14 to rotor 18.
  • snap-fit lugs 36 and 38 may be utilized in each instance, depending upon the specific application.
  • the air directing plate 22, the hub 14 and snap-fit lugs 36 and 38 are preferably fabricated of a resilient injection molded plastic material such as a polyester, nylon or the like.
  • snap-fit lugs 36 and 38 are configured to include axial slots 36a and 38a respectively, which are dimensioned to receive the tip of a screw driver (or other tool) to bend the lug rearwardly to relieve the snap lock for disassembling the components for repairs or the like.
  • hub 14 is also attached to rotor 18 by three torque studs 40 (only one shown in Fig. 2).
  • Torque studs 40 are dimensioned to be inserted and press fitted into the spaced circular apertures 42 in the face of rotor 18 as shown in Fig. 1, and are dimensioned and structured to transmit torque from the rotor 18 to fan base 14 and to contain the centrifugal force thus created by the rotating components.
  • four or more of such torque studs 40 may be utilized, depending upon the application.
  • air directing plate 22 is positioned distally of face plate 16 and rotor ribs 24 as shown.
  • the air directing plate 22 is connected directly to rotor ribs 24 by snap-fit lugs 36 of the type described, and is dimensioned to block the air cooling openings 30 in rotor 14 as shown in Fig. 1.
  • air-directing plate 22 defines radially extending transverse air directing space 44 shown by arrows "A", which communicates with the cooling air openings 30 in rotor 18.
  • the air directing plate 22 is spaced distally from rotor 18 and face plate 16 of hub 14 by circular spacer 46 positioned about motor shaft support 48 and formed integrally with air directing plate 22 as best shown in Fig. 2.
  • the air flow through the transverse air directing space is substantially unimpeded due to the continuous inner surface portion of the plate 22, a minor - or negligible - amount of interference to the air flow is provided by the snap-fit lugs 36.
  • the cooling air is actually directed to pass by the fan blades 12 and therefore, circumferential or tangential forces are also imparted to the cooling air when exiting space 44 toward the lower pressure area.
  • additional vortex activity is imparted to the air flow, creating an improved pattern of air circulation which promotes cooling of the motor components.
  • the internal components of a brushless motor are generally closely spaced. Thus, cooling of the components is particularly required in such instances.
  • hub 54 includes flange 56 formed of two circumferential members, including a first inner flange 58 positioned about rotor 18 and preferably press fitted or snugly fitted thereon.
  • a second circumferential flange 60 is spaced radially outwardly of first flange 58 and is concentric therewith so as to define a uniform annular space therearound as shown.
  • a plurality of stiffener ribs 62 shown schematically in Fig. 3 are equally spaced apart circumferentially within the annular space between flanges 58 and 60 to provide stiffening support to the flanges to support blades 12.
  • Blades 12 are connected to outer flange 58 in a manner similar to the connection of the blades to flange 17 shown in Fig. 1.
  • air directing plate 22 is configured as in the embodiment of Fig. 2, having a central flat section with a substantially continuous inner surface portion 21 and a substantially continuous outer surface portion 23.
  • the radially outwardmost portion 25 is arcuately shaped as in the previous embodiment.
  • Fig. 3 illustrates four fan blades 12 as shown in Fig. 1, alternatively any number of blades may be utilized, depending upon the specific cooling application needed.
  • the use of dual concentric flanges 58 and 60, with stiffener ribs 62 therebetween facilitates a lighter weight hub with improved strength.
  • the lighter weight hub will, inter alia, permit the use of additional fan blades by compensating for the additional weight and dynamic forces added by the fan blades.
  • hub 54 is attached to rotor 18 by three snap lugs 38 as shown in the embodiment of Fig. 1.
  • hub 54 is also torsionally fixed to rotor 18 by three torque studs 40 in the manner shown in Figs. 1 and 2.
  • the torque studs 40 serve to transmit torque from rotor 18 to hub 54 and to blades 12, thus containing the torque and centrifugal forces which are developed during rotation.
  • hub 64 includes face plate 66 and flange member 68 and is attached to rotor 18 by snap fittings 70 similar to lugs 38 and 40 in the previous embodiments.
  • Concentric flange 72 is shown along the cross-section in Fig. 4 and is similar to the flanges disclosed previously so as to define an annular space 74 therebetween.
  • the annular space 74 communicates with the air directing space 44 defined between air directing plate 76 and rotor 18 and hub 64.
  • the fan blades 12 are attached directly to inner concentric flange member 68 which is connected to rotor 18 as shown. However, blades 12 also extend through the outer concentric flange 72 and are connected thereto by any of a number of known attachment techniques.
  • the blades 12 in this embodiment actually provide stiffening or strengthening support to the inner and outer flanges 68 and 72, thus minimizing the need for the support ribs 62 shown in the embodiment of Fig. 3.
  • support ribs may be utilized as well in the embodiment of Fig. 4.
  • the connection between flanges 68 and 72 and blades 12 actually provides support and increased strength for the flanges, thereby justifying the reduction in flange thickness for weight purposes.
  • blades 12 and hub 64 are molded from a resilient plastic material such as polyester, nylon or the like.
  • FIG. 5 another cross-section of the embodiment of Fig. 4 is shown, of the hub 64 and cooling air directing plate 76.
  • the connection of the second circumferential flange 72 with air directing plate 76 by resilient snap fastener 88 extending inwardly of air directing plate 76 is shown in this Fig.
  • only one snap fastener 88 is shown extending inwardly of air directing plate 76, there are actually three such fasteners spaced equally in the same manner as shown in the previous embodiments.
  • one torque stud 40 is shown in Fig. 5, to rotatably connect hub 64 with rotor 18, three such studs are utilized as in the previous embodiments.
  • blades 12 are connected to the first flange 68 and extend through second outer circumferential concentric flange 72 to provide stability and strength to flanges 66 and 72.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (23)

  1. Ensemble formant moto-ventilateur (10) qui comprend :
    un moteur comportant un rotor (18) ;
    un moyeu (14, 54, 64) comportant une pluralité de pales de ventilateur (12) s'en étendant radialement vers l'extérieur et comportant des moyens pour être fixé au moteur de façon à tourner, de telle sorte que, lorsque le moyeu (14, 54, 64) est entraíné à rotation, les pales de ventilateur (12) créent une différence de pression atmosphérique définie par une zone à haute pression en aval des pales (12) et une zone à basse pression en amont des pales (12), ledit moyeu (14, 54, 64) comportant en outre une ouverture dimensionnée et localisée pour y recevoir une partie du rotor (18), caractérisé en ce que la partie du rotor (18) comporte en elle une ouverture pour air de refroidissement (28) qui communique avec la zone à haute pression, et
    un élément de guidage d'air de refroidissement (22, 76) positionné axialement en amont dudit moyeu (14, 54, 64) pour définir un espace de guidage d'air avec le moteur et ledit moyeu (14, 54, 64), ladite ouverture de guidage d'air faisant communiquer ladite zone à basse pression avec ladite zone à haute pression par un circuit d'air de refroidissement dans le moteur et ladite ouverture (30) du rotor pour refroidir le moteur.
  2. Ensemble formant ventilateur selon la revendication 1, dans lequel ledit moyeu (14, 54, 64) comprend une plaque de base (16) adaptée pour être fixée à torsion au moteur de façon à tourner avec lui, et une bride circonférentielle (17, 56) s'étendant de manière proximale de ladite plaque de base (16) dans une direction axiale, ladite bride circonférentielle (17, 56) étant configurée et dimensionnée pour entourer circonférentiellement au moins une partie du rotor (18) dans une relation adjacente avec elle.
  3. Ensemble formant ventilateur selon la revendication 2, dans lequel lesdites pales de ventilateur (12) sont assemblées à ladite bride circonférentielle (17, 56) et s'en étendent radialement vers l'extérieur.
  4. Ensemble formant ventilateur selon la revendication 3, dans lequel le rotor (18) comporte une pluralité d'éléments formant nervures d'extension radiale (24) qui définissent une pluralité d'ouvertures (30) correspondantes entre elles qui définissent ladite ouverture pour air de refroidissement.
  5. Ensemble formant ventilateur selon la revendication 4, dans lequel ledit élément de guidage d'air de refroidissement (22) est une plaque assemblée aux éléments formant nervures d'extension radiale (24).
  6. Ensemble formant ventilateur selon la revendication 5, dans lequel ledit moyen pour fixer à torsion ledit moyeu (14, 54, 64) au moteur est constitué par une pluralité de tiges de couple (40) pour assembler ledit moyeu (14, 54, 64) au rotor (18) de façon à le faire tourner avec lui.
  7. Ensemble formant ventilateur selon la revendication 6, dans lequel ladite bride circonférentielle (56) est composée d'une paire d'éléments formant brides concentriques circonférentielles (58, 60), un premier (58) desdits éléments formant brides concentriques circonférentielles étant configuré et dimensionné pour entourer circonférentiellement au moins une partie du moteur dans une relation de contact adjacent avec elle, ledit second élément formant bride concentrique circonférentielle (60) étant espacé radialement vers l'extérieur dudit premier élément formant bride concentrique circonférentielle (58) pour définir un espace annulaire entre eux.
  8. Ensemble formant ventilateur selon la revendication 7, dans lequel lesdites pales de ventilateur (12) sont fixées audit second élément formant bride concentrique circonférentielle (60) et s'en étendent radialement vers l'extérieur.
  9. Ensemble formant ventilateur selon la revendication 8, dans lequel ladite bride circonférentielle (56) comprend une pluralité de nervures de support (62) positionnées entre lesdits, et assemblées auxdits, premier (58) et second (60) éléments formant brides concentriques circonférentielles, lesdites nervures de support (62) étant espacées circonférentiellement les unes par rapport aux autres pour fournir un support structurel auxdits éléments formant brides concentriques circonférentielles (58, 60).
  10. Ensemble formant ventilateur selon la revendication 9, dans lequel ledit second élément formant bride concentrique circonférentielle (60) définit au moins une partie dudit circuit de guidage d'air de refroidissement avec ladite plaque de guidage d'air de refroidissement (22, 76) et a une configuration à section transversale de forme arquée dans une position adjacente à l'assemblage avec ledit moyeu pour créer une configuration profilée pour ledit circuit de guidage d'air de refroidissement.
  11. Ensemble formant ventilateur selon la revendication 10, dans lequel la partie radialement la plus extérieure de ladite plaque de guidage d'air de refroidissement (22, 76) a une configuration à section transversale de forme arquée qui est espacée dudit, et concentrique audit, second élément formant bride concentrique circonférentielle (60) pour définir une configuration profilée pour ledit circuit de guidage d'air de refroidissement.
  12. Ensemble formant ventilateur selon la revendication 11, dans lequel ledit moyeu (54) et ladite plaque de guidage d'air de refroidissement sont moulées en une matière plastique.
  13. Ensemble formant ventilateur selon la revendication 12, dans lequel ladite matière plastique est un polyester.
  14. Ensemble formant ventilateur selon la revendication 13, dans lequel ledit moyeu (54) est assemblé au moteur par des pattes encliquetables (38) qui sont assemblées de manière amovible au rotor (18).
  15. Ensemble formant ventilateur selon la revendication 2, dans lequel ladite bride circonférentielle comprend un premier élément formant bride circonférentielle (68) et lesdites pales de ventilateur (12) sont fixées audit premier élément formant bride circonférentielle (68), et un second élément formant bride circonférentielle (72) étant espacé radialement vers l'extérieur dudit premier élément formant bride circonférentielle (68) et concentrique à lui pour définir un espace annulaire entre eux, lesdites pales de ventilateur (12) s'étendant à travers ledit second élément formant bride concentrique circonférentielle (72).
  16. Ensemble formant ventilateur selon la revendication 15, dans lequel ledit moyeu (64) est assemblé au moteur par des pattes encliquetables (70) qui sont assemblées de manière détachable au rotor (18).
  17. Ensemble formant ventilateur selon la revendication 16, dans lequel ladite plaque de guidage d'air de refroidissement (22) est assemblée audit second élément formant bride concentrique circonférentielle (72) et ledit espace annulaire communique avec ledit espace de guidage d'air de refroidissement pour définir un circuit de guidage d'air de refroidissement continu entre ladite plaque de guidage d'air de refroidissement (76) et lesdits premier (68) et second (72) éléments formant brides concentriques circonférentielles.
  18. Ensemble formant ventilateur selon la revendication 17, dans lequel ledit premier élément formant bride concentrique circonférentielle (68) a une configuration à section transversale de forme arquée à la jonction avec ladite plaque de base pour ménager une configuration profilée pour ledit circuit de guidage d'air de refroidissement.
  19. Ensemble formant ventilateur selon la revendication 18, dans lequel ledit second élément formant bride concentrique circonférentielle (72) est assemblé à ladite plaque de guidage d'air de refroidissement (76) et a une configuration à section transversale de forme arquée à la jonction avec celle-ci.
  20. Ensemble formant ventilateur selon la revendication 2, comprenant en outre un second élément formant bride circonférentielle concentrique audit premier élément formant bride concentrique circonférentielle mentionné, et ledit second élément formant bride concentrique circonférentielle étant fixé à ladite plaque de guidage d'air de refroidissement.
  21. Ensemble formant ventilateur selon la revendication 20, dans lequel lesdites pales de ventilateur sont fixées auxdits premier et second éléments formant brides concentriques circonférentielles et s'étendent radialement vers l'extérieur depuis ledit premier élément formant bride concentrique circonférentielle à travers ledit second élément formant bride concentrique circonférentielle, et ladite plaque de guidage d'air de refroidissement est fixée audit second élément formant bride concentrique circonférentielle par une attache encliquetable résiliente.
  22. Ensemble formant moto-ventilateur selon l'une quelconque des revendications précédentes, dans lequel le moteur est un moteur sans balais et comprend un stator qui contient une partie formant puits thermique (52) pour refroidir le moteur, et dans lequel, en service, l'air de refroidissement est dirigé depuis la zone à haute pression dans le circuit d'air de refroidissement à l'intérieur du moteur et sur la partie formant puits thermique (52), et par l'ouverture à air de refroidissement (28) du rotor de sorte à diriger l'air jusqu'à ladite zone à basse pression.
  23. Ensemble formant moto-ventilateur selon la revendication 15, comprenant en outre une attache détachable pour assembler ladite plaque de guidage d'air de refroidissement audit second élément formant bride.
EP98119844A 1997-11-25 1998-10-20 Ensemble ventilateur avec amélioration du réfroidissement du moteur Expired - Lifetime EP0921318B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/977,985 US5944497A (en) 1997-11-25 1997-11-25 Fan assembly having an air directing member to cool a motor
US977985 1997-11-25

Publications (3)

Publication Number Publication Date
EP0921318A2 EP0921318A2 (fr) 1999-06-09
EP0921318A3 EP0921318A3 (fr) 2000-04-05
EP0921318B1 true EP0921318B1 (fr) 2004-05-26

Family

ID=25525708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98119844A Expired - Lifetime EP0921318B1 (fr) 1997-11-25 1998-10-20 Ensemble ventilateur avec amélioration du réfroidissement du moteur

Country Status (3)

Country Link
US (1) US5944497A (fr)
EP (1) EP0921318B1 (fr)
DE (1) DE69824126T2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008109038A2 (fr) * 2007-03-05 2008-09-12 Xcelaero Corporation Refroidissement à écoulement inverse pour moteur de ventilateur
DE102005006192B4 (de) * 2004-09-06 2015-11-12 Delta Electronics, Inc. Wärmeableitungsstruktur für einen Motor

Families Citing this family (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19821833A1 (de) * 1998-05-15 1999-11-18 Bosch Gmbh Robert Lüfter
IT1308475B1 (it) * 1999-05-07 2001-12-17 Gate Spa Motoventilatore, particolarmente per uno scambiatore di calore di unautoveicolo
FR2795458B1 (fr) * 1999-06-24 2002-06-14 Jeumont Ind Motoventilateur de mise en circulation d'un fluide dans une installation d'echange thermique et procede de refroidissement du moteur d'entrainement du motoventilateur
TW529675U (en) * 1999-11-25 2003-04-21 Delta Electronics Inc Improved fan with movable blade series connected
US7238004B2 (en) * 1999-11-25 2007-07-03 Delta Electronics, Inc. Serial fan with a plurality of rotor vanes
JP2002039096A (ja) * 2000-07-27 2002-02-06 Minebea Co Ltd 送風機
DE10044066A1 (de) * 2000-09-07 2002-04-04 Stribel Gmbh Elektrischer Lüfter
US6729859B2 (en) * 2001-09-07 2004-05-04 Pro-Team, Inc. Airflow generating device air intake
US6707203B2 (en) * 2001-11-09 2004-03-16 Pem Management, Inc. Electric motor with integral attachment means
DE10161367A1 (de) * 2001-12-14 2003-07-03 Conti Temic Microelectronic Elektrische Antriebseinheit
US20040036367A1 (en) * 2002-01-30 2004-02-26 Darin Denton Rotor cooling apparatus
US20040075356A1 (en) * 2002-10-16 2004-04-22 Sunonwealth Electric Machine Industry Co., Ltd. Fan rotor
TW566751U (en) * 2002-12-30 2003-12-11 Delta Electronics Inc Rotor assembly
FR2853365B1 (fr) * 2003-04-02 2006-08-04 Valeo Systemes Dessuyage Dispositif de ventilation
KR101096469B1 (ko) * 2003-07-10 2011-12-20 마그네틱 애플리케이션 인크. 소형 고전력 교류 발전기
US7244110B2 (en) * 2003-09-30 2007-07-17 Valeo Electrical Systems, Inc. Fan hub assembly for effective motor cooling
FR2866396B1 (fr) 2004-02-17 2006-06-30 Faurecia Bloc Avant Groupe moto-ventilateur pour radiateur de circuit de refroidissement d'un vehicule.
KR20050099352A (ko) * 2004-04-09 2005-10-13 엘지전자 주식회사 전면 흡토출 방식의 공기조화기용 실외기
US7616440B2 (en) * 2004-04-19 2009-11-10 Hewlett-Packard Development Company, L.P. Fan unit and methods of forming same
US20060039789A1 (en) * 2004-08-20 2006-02-23 Datech Technology Co., Ltd. Hub structure for a heat-dissipation fan
US8324766B2 (en) * 2004-09-06 2012-12-04 Delta Electronics, Inc. Heat-dissipation structure for motor
JP4297859B2 (ja) * 2004-09-28 2009-07-15 三洋電機株式会社 電動車輪用ハブユニット及び該ハブユニットを具えた乗物
JP2006161757A (ja) * 2004-12-09 2006-06-22 Daikin Ind Ltd 軸流ファン
TWI300284B (en) * 2005-04-18 2008-08-21 Delta Electronics Inc Heat-dissipation structure of motor
US7443063B2 (en) * 2005-10-11 2008-10-28 Hewlett-Packard Development Company, L.P. Cooling fan with motor cooler
US20070114857A1 (en) * 2005-11-18 2007-05-24 Wen-Hao Liu Rotor device
DE102005060362A1 (de) * 2005-12-16 2007-06-21 BSH Bosch und Siemens Hausgeräte GmbH Befestigungsvorrichtung für einen Motor in einem Haushaltgerät
US7768165B2 (en) * 2006-02-02 2010-08-03 Magnetic Applications, Inc. Controller for AC generator
US8018108B2 (en) * 2008-02-07 2011-09-13 Magnetic Applications, Inc. Compact high power alternator
DE202009001033U1 (de) 2009-01-27 2010-06-24 Ebm-Papst Mulfingen Gmbh & Co. Kg Elektromotor mit Kühlventilatorwirkung
DK2227078T3 (da) * 2009-03-04 2012-02-20 Ebm Papst Mulfingen Gmbh & Co Spændekomponent til at trykke ydelseskomponenter fast til en køleflade
DE102009003142A1 (de) * 2009-05-15 2010-11-18 Robert Bosch Gmbh Lüfter-Rotor-Verbindung für ein Kühlgebläse eines Kraftfahrzeugs
DE102010001354A1 (de) * 2009-08-26 2011-03-03 Robert Bosch Gmbh Gebläse
DE102009050369A1 (de) * 2009-10-22 2011-04-28 Magna Electronics Europe Gmbh & Co.Kg Axiallüfter
US20110116928A1 (en) * 2009-11-16 2011-05-19 Robert Bosch Gmbh Open-hub centrifugal blower assembly
US8157524B2 (en) 2009-12-03 2012-04-17 Robert Bosch Gmbh Axial flow fan with hub isolation slots
US8267674B2 (en) * 2010-02-04 2012-09-18 Robert Bosch Gmbh Centrifugal blower assembly
DE102010012392A1 (de) 2010-03-22 2011-09-22 Ebm-Papst Mulfingen Gmbh & Co. Kg Ventilator
US8820692B2 (en) * 2010-04-23 2014-09-02 Sunonwealth Electric Machine Industry Co., Ltd. Motor casing and a motor utilizing the same
DE102010031303A1 (de) * 2010-07-14 2012-01-19 Robert Bosch Gmbh Gebläsemodul
EP2429067A1 (fr) * 2010-09-09 2012-03-14 ebm-papst Mulfingen GmbH & Co. KG Rotor pour un moteur à rotor extérieur électrique et moteur à rotor extérieur
US20120085519A1 (en) * 2010-10-12 2012-04-12 Chou Chu-Hsien Heat-dissipating structure for motor stator
US10550847B2 (en) 2011-03-26 2020-02-04 Ebm-Papst St. Georgen Gmbh & Co. Kg Mixed-flow or diagonal ventilating fan with consistent cooling
US8267673B1 (en) 2011-05-04 2012-09-18 John Pairaktaridis Brushless cooling fan
US8461731B2 (en) * 2011-05-06 2013-06-11 General Electric Company Dynamoelectric machine pressurizing apparatus
US8974194B2 (en) * 2011-12-09 2015-03-10 Sunonwealth Electric Machine Industry Co., Ltd. Advection-type fan and an impeller thereof
DE202012000939U1 (de) * 2012-01-28 2012-03-15 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Kühlerlüfter eines Kraftfahrzeugs
US9624817B2 (en) 2012-03-09 2017-04-18 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Cooling fan module and adapter device therefor
US9022751B2 (en) 2012-03-13 2015-05-05 Sunonwealth Electric Machine Industry Co., Ltd. Advection fan and an impeller thereof
FR2988338B1 (fr) * 2012-03-22 2015-05-08 Valeo Systemes Thermiques Dispositif de ventilation
FR2988337B1 (fr) * 2012-03-22 2015-05-08 Valeo Systemes Thermiques Systeme de ventilation
US20140010645A1 (en) * 2012-07-05 2014-01-09 Adda Corp. Fan structure
ITTO20120765A1 (it) * 2012-09-05 2014-03-06 Johnson Electric Asti S R L Gruppo di ventilazione, particolarmente per uno scambiatore di calore di un veicolo
CN107546883B (zh) * 2012-12-21 2021-02-26 菲舍尔和佩克尔应用有限公司 电机
WO2014139555A1 (fr) * 2013-03-11 2014-09-18 Fresh Ab Ventilateur axial comprenant une roue de ventilateur fixée de façon amovible
US9537373B2 (en) 2013-05-16 2017-01-03 Remy Technologies, L.L.C. Alternator fan
DE102013215808A1 (de) * 2013-08-09 2015-02-12 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Rotornabenanordnung, elektrischer Lüfter
US9502944B2 (en) * 2013-09-09 2016-11-22 Remy Technologies, L.L.C. Component for an electric machine
US9634545B2 (en) 2013-09-09 2017-04-25 Remy Technologies, L.L.C. Component for an electric machine
KR101372521B1 (ko) * 2013-10-23 2014-03-11 동양기전 주식회사 방열 성능이 향상된 팬 모터 장치
US10253676B2 (en) * 2013-12-20 2019-04-09 Magna Powertrain Bad Homburg GmbH Molded rotor for cooling fan motor
CN106795894A (zh) * 2014-08-27 2017-05-31 罗伯特·博世有限公司 按压式热/泼溅屏蔽件和具有该按压式热/泼溅屏蔽件的发动机冷却风扇组件
EP3320215B1 (fr) * 2015-07-09 2022-02-09 Bascom Hunter Technologies, Inc. Ventilateur axial compact
KR102190928B1 (ko) * 2015-09-03 2020-12-15 한온시스템 주식회사 구동유닛 및 이를 포함하는 쿨링장치
JP6172234B2 (ja) * 2015-10-15 2017-08-02 ダイキン工業株式会社 電動機および送風装置
DE102016203892A1 (de) * 2016-03-09 2017-09-14 Mahle International Gmbh Gebläseanordnung
JPWO2018025986A1 (ja) * 2016-08-05 2019-06-06 日本電産株式会社 モータ
EP3496235B1 (fr) * 2016-08-05 2021-06-30 Nidec Corporation Moteur
DE102016012801A1 (de) * 2016-10-26 2018-04-26 Man Truck & Bus Ag Axiallüfterrad
DE102016224245A1 (de) * 2016-12-06 2018-06-07 Robert Bosch Gmbh Handwerkzeugmaschine mit einem Feder-Rastwerk
CN108725769A (zh) * 2017-04-19 2018-11-02 深圳市道通智能航空技术有限公司 一种电机散热件、电机及飞行器
IT201700067309A1 (it) * 2017-06-16 2018-12-16 I M E Ind Motori Elettrici S P A Sistema ventilatore da incasso
FR3077326B1 (fr) * 2018-01-29 2021-12-10 Valeo Systemes Thermiques Dispositif de ventilation et module de refroidissement comportant un tel dispositif de ventilation
FR3082895A1 (fr) * 2018-06-21 2019-12-27 Valeo Systemes Thermiques Dispositif de ventilation pour vehicule automobile
DE102020100865A1 (de) * 2020-01-16 2021-07-22 Ebm-Papst Mulfingen Gmbh & Co. Kg Ventilator mit einem Außenläufermotor und Kühlkanal zur Kühlung der Motorelektronik und von Motorantriebskomponenten
DE102020103772A1 (de) * 2020-02-13 2021-08-19 Ebm-Papst St. Georgen Gmbh & Co. Kg Ventilator mit Abdeckscheibe an der Rotorglocke
FR3115503B1 (fr) * 2020-10-22 2022-11-11 Valeo Systemes Thermiques Dispositif de ventilation pour module de refroidissement de véhicule automobile
DE102021120613A1 (de) 2021-08-09 2023-02-09 Ebm-Papst St. Georgen Gmbh & Co. Kg Spritzschutzvorrichtung für einen Lüfter
US11942826B2 (en) 2021-09-24 2024-03-26 Rolls-Royce Electrical Norway AS Electric machine cooling
IT202100031481A1 (it) * 2021-12-15 2023-06-15 Spal Automotive Srl Ventola assiale

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US34456A (en) * 1862-02-18 Improved clothes-bar
US34268A (en) * 1862-01-28 Improvement in shells for rifled ordnance
GB229708A (en) * 1924-02-23 1925-03-26 Rateau Soc Improvements in or relating to electrically driven fans
DE1428150C3 (de) * 1962-05-03 1973-11-22 Hans 5275 Bergneustadt Kohl Axiallüfter
US3303995A (en) * 1964-09-08 1967-02-14 Rotron Mfg Co Fan motor cooling arrangement
FR2209410A5 (fr) * 1972-11-03 1974-06-28 Technicair Sa
DE2257509C2 (de) * 1972-11-23 1982-09-02 Papst-Motoren GmbH & Co KG, 7742 St Georgen Radialgebläse
US3906266A (en) * 1974-02-22 1975-09-16 Black & Decker Mfg Co High inertia insulating cooling fan for electric motor device
DE2832702A1 (de) * 1978-07-26 1980-02-14 Bosch Gmbh Robert Elektromotor mit einem luefterrad zum foerdern von kuehlluft
JPS5529045A (en) * 1978-08-21 1980-03-01 Aisin Seiki Co Ltd Motor-driven cooling fan device
CH654455A5 (de) * 1980-05-10 1986-02-14 Papst Motoren Gmbh & Co Kg Buerstenlose gleichstrommotoranordnung, insbesondere fuer magnetplattenantriebe.
US4399379A (en) * 1980-12-19 1983-08-16 General Motors Corporation Air cooled machine and cooling fan
DE3301918A1 (de) * 1983-01-21 1984-07-26 Robert Bosch Gmbh, 7000 Stuttgart Elektromotor, insbesondere zum antreiben eines auf einer motorwelle sitzenden luefterrades
US4563622A (en) * 1984-07-12 1986-01-07 Rotron Incorporated Simple brushless DC fan motor
US4554491A (en) * 1984-08-10 1985-11-19 Msl Industries, Inc. Brushless DC motor having a laminated stator with a single stator winding
JPS6237044A (ja) * 1985-08-05 1987-02-18 Kiyonori Fujisaki 小型フアンモ−タ
GB2185074B (en) * 1985-11-08 1990-12-19 Papst Motoren Gmbh & Co Kg Fan
US4682065A (en) * 1985-11-13 1987-07-21 Nidec-Torin Corporation Molded plastic motor housing with integral stator mounting and shaft journalling projection
US4838760A (en) * 1987-04-27 1989-06-13 Bendix Electronics Limited Fan with motor cooling enhancement
IT1240997B (it) * 1990-10-30 1993-12-27 Magneti Marelli Spa Motoventilatore, particolarmente per autoveicoli
US5188508A (en) * 1991-05-09 1993-02-23 Comair Rotron, Inc. Compact fan and impeller
DE4122018C2 (de) * 1991-07-03 1993-12-23 Licentia Gmbh Axialgebläse, insbesondere zur Kühlung eines dem Kühler eines Fahrzeugs vorgeordneten Kondensators einer Klimaanlage
DE4215504A1 (de) * 1992-05-12 1993-11-18 Bosch Gmbh Robert Kommutator-Kleinmotor
DE4441649B4 (de) * 1994-11-23 2005-12-22 Temic Automotive Electric Motors Gmbh Gebläse, insbesondere Axialgebläse für Kraftfahrzeuge
US5654598A (en) * 1995-12-14 1997-08-05 Siemens Electric Limited Brushless motor with inside mounted single bearing
US5818133A (en) * 1996-04-19 1998-10-06 Siemens Canada Ltd. Brushless motor with tubular bearing support

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005006192B4 (de) * 2004-09-06 2015-11-12 Delta Electronics, Inc. Wärmeableitungsstruktur für einen Motor
WO2008109038A2 (fr) * 2007-03-05 2008-09-12 Xcelaero Corporation Refroidissement à écoulement inverse pour moteur de ventilateur
WO2008109038A3 (fr) * 2007-03-05 2008-10-30 Xcelaero Corp Refroidissement à écoulement inverse pour moteur de ventilateur
US7819641B2 (en) 2007-03-05 2010-10-26 Xcelaero Corporation Reverse flow cooling for fan motor

Also Published As

Publication number Publication date
DE69824126T2 (de) 2004-09-16
EP0921318A2 (fr) 1999-06-09
US5944497A (en) 1999-08-31
DE69824126D1 (de) 2004-07-01
EP0921318A3 (fr) 2000-04-05

Similar Documents

Publication Publication Date Title
EP0921318B1 (fr) Ensemble ventilateur avec amélioration du réfroidissement du moteur
EP1709332B1 (fr) Ventilateur centrifuge
JP3354157B2 (ja) 換気用の軸流空気入口を有するブロワーホイール
JP4172998B2 (ja) 高効率一体型遠心ブロワ
US5967764A (en) Axial fan with self-cooled motor
US5217353A (en) Fan, particularly for motor vehicles
US3274410A (en) Cooling arrangement for motorfan unit
US6283726B1 (en) Radial blower, particularly for heating and air conditioning systems in automobiles
US6789999B2 (en) Center console dual centrifugal fan blower
EP2325497A2 (fr) Ensemble de ventilateur centrifuge à moyeu ouvert
US6494681B2 (en) Combined axial flow and centrifugal fan in an electrical motor
CN102562627B (zh) 风扇装置
EP0992692B1 (fr) Ventilateur avec canal de refroidissement pour le moteur
JP2000199497A (ja) 樹脂製ファン
CN214841212U (zh) 散风组件、空调室内机和空调器
GB2340182A (en) Blower motor and an insert member therefor
KR100551582B1 (ko) 축류팬
JPS6223255Y2 (fr)
JPS58204915A (ja) 自動車用電動フアン
KR20040022528A (ko) 냉각팬의 풍량 증대장치
JPS6326254B2 (fr)
JPH10146020A (ja) 電動送風機

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19991104

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

AKX Designation fees paid

Free format text: DE FR GB IT

17Q First examination report despatched

Effective date: 20021111

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS VDO AUTOMOTIVE INC.

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69824126

Country of ref document: DE

Date of ref document: 20040701

Kind code of ref document: P

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20041012

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20041029

Year of fee payment: 7

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051020

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051020

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20051219

Year of fee payment: 8

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20051020

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060630

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070501